Carniolan bee has gray and silver body color. Worker bees have the proboscis of 6.4-6.8 mm. Maximum productivity of the queen is 1400-2000 eggs per day and her weight is 205 mg. Krajina and the Balkans breed spread throughout the world. Experts say that this breed combines the good qualities of the Carpathian and gray Caucasian bees. Carnioan bees better hod the winter than the Caucasian. Bees are peaceful and quiet, the family develops rapidly in the spring and early so they effectively use honey plants. Rare swarming may be noted, which does not exceed 30%. With timely anti-swarming activities can easily be switched from swarming to the working state, from the bad honey crop to the good. They at first fill with honey the breed part of the nest, and then stores. They are used for pollination of red clover.

Carniolan bees are more peaceful than brown bees of France. They sit quietly on combs, taken out of the hive. In some areas of the U.S. they raise brood better than the Italian bee. However, these bees have a negative feature – they like swarming. For this reason, they are not suitable for mobile apiaries. These bees almost never have propolis in the hive. Honeycombs are white and clean. If they haven’t the tendency to swarm, these bees would be ideal for the production of honeycomb.